A high-speed motion process image recording device

Abstract

The invention discloses a recording device for images of a high-speed movement process. The recording device for the images of the high-speed movement process comprises a front-end optical coupling module, a strobing type proximity focusing image intensifier, a strobing time sequence trigger and control module, a strobing high-voltage pulse generation module, a rear-end optical coupling module, a CCD image recording module and a main control computer, wherein images of a detected high-speed movement object are formed on a photocathode of the strobing type proximity focusing image intensifier through the front-end optical coupling module, the images on the photocathode are controlled by the strobing high-voltage pulse generation module to form sequential framing images of the high-speed movement object on a fluorescent screen of the strobing type proximity focusing image intensifier, the sequential framing images are coupled to the CCD image recording module through the rear-end optical coupling module, digital images are output, and a framing record of the movement process of the shot object is accomplished. The recording device for the images of the high-speed movement process can provide high-quality digitized images for research of ultra-fast processes of shock wave and detonation physical tests, analysis of trajectories of conventional weapon projectiles, material micro-jet and interface instability, track recording of high-speed flying objects and the like.

Description

technical field [0001] The invention belongs to the field of high-speed photographic devices and technologies, and relates to a high-speed photoelectric framing imaging device capable of completely presenting the motion process of a moving object in one image. Specifically, the pulse number, pulse width and pulse time interval are adjustable. The sequence of high-voltage pulse trains drives a single strobe-type close-in-focus image intensifier photocathode to realize image recording of the moving process of moving objects. Background technique [0002] High-speed framing photography technology is an important test method for studying high-speed motion process. The most fundamental difference between it and general photography technology is that it has high time resolution ability, can track the occurrence and development of rapid changes or motion process, and record down. High-speed framing photography technology has the advantages of high time resolution (short exposure t...

AI Technical Summary

Problems solved by technology

The basic principle of self-focusing lens array spectroscopic imaging is the same as that of multi-channel optical framing photoelectric photography, which also divides the target image plane into multiple spatially separated image planes and then uses the back-end CCD to record and image; laser pulse illumination imaging uses pulsed laser light to illuminate the target Form a short exposure time, and then use CCD to record and image. This high-speed imaging technology can only be applied in places with dark background light, and has high requirements on the uniformity of the laser beam spot, otherwise the exposure will be uneven and the image quality will be poor.

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